Yin and yang deficiency can be seen in the cold (fear of cold, cold limbs), hot hands and feet (irritability and sultriness) and other symptoms, combined with dampness and heat can also be seen in the loose stools, dry mouth and bitter, yellow tongue coating and other manifestations. Yin and yang deficiency is caused by yin deficiency for a long time and yang, or yang deficiency for a long time and yin, there are common symptoms of yin deficiency such as hot hands and feet, night sweating (sweating abnormally after going to sleep, waking up sweating stops), dry mouth and pharynx, etc., Yang deficiency can be seen in the cold, cold limbs, self-sweating (daytime involuntary sweating, sweating aggravates a little bit of movement), etc., the yin and yang deficiency with both of the above symptoms. Damp-heat is mostly caused by spleen deficiency, which makes the fluid lose its distribution, or by feeling damp-heat, which is often manifested as dry mouth and bitter mouth, loose stools, and yellowish and greasy tongue coating. This kind of damp-heat symptoms can be accompanied by the symptoms related to the deficiency of yin and yang at the same time, but there is also a distinction between primary and secondary, there are mainly yin deficiency, there are mainly yang deficiency, and there are also damp-heat obvious, the specific should be combined with the actual situation of a comprehensive analysis.